Joshua hendy



"ro ALL wHoM 1T MAY ojoNeEsN: .L

@uiten fates, aient @ifi-zegv4 Letters Patent No. 78,089, dated May 19` 1868..' i

IMPEOVED GONOENTRATORL di-igt Stimmt: como in n'- tliese etters atmt :mh making aan nf themas.

Be it known'l that I, JOSHUA REND-Y, of-the city and county ofl'Sa'n `Francisco, Stateof"'Ualifornia,,have invented certain new and useful Improvements in Con'centr'ators; `and I do herebydeclare the following description. nn d accompanying drawings are suiiicient to enable any person skilled in the artnr science Vto which it most nearly Vappertains to piakc and use my said invention or improvements-without further invention or experimenta -Tlie nature of m invention is to rovide an im roved conccntrator for savinwiineln -divided uicksilver,

y P P a amalgam, and gold'froxp the sands, and for concentrating and `sav-ing the sulphurts contained in ores', and co'usists of environ fr 'ame,o` peculiar constructio, which holds an oscillating-pan, having a. curvilinear' Bottomwith a groove aroundthe inner periphery, which gradually declines from a given pointto the opposite or discharging',- Pon' 't My invention xalso relates to a distributer or distributers and stirrers, which are operated by the same power whiehmoves the lian, and through which the pulp passes into the pan, the heavier particles settling in the annu.-

langroovc, displacing the lighter particles of sand by their gravity and thelcentrifug'al f orce, while the current i 0f weerend'tbe send and 'debris tend towards. the central., diseimrgnopenisgrthrough,which,ther pass ont, nl

at the sume time thel stirrersagitate the'surfa'ce of the-pan, and prevent the packing of the'materiahwhich is being treated. i

lAlso my invention relatos-to a self-discharging 'appa-rams, and fthe peculiar construction of 'the crank-pin attuchmcnfwhich accommodates itself` to the circular-,line of the oscillationsof the pan. I

To more full'yfillustrate` and describe my invention, reference is had to the. accompanying drawings, and letters marked tbereon, forming a part of this specification, of which-.-

Figure 1 is aplan, Figure 2 is a side sectional elevation. Y A A is the frame, which may be made of cast iron or other material, and is triangular in form, with projecting ends B B, in which the horizontal shaft Chas its bearings.v .On this shaft.. are placed two driving or belt I pulleys D D; also, stench end, y-Wheels E E.

F F are supports, bolted to the frame Aback of the bearings, for the upper end of the vertical shaft G, at I the point F', which has its'step4 in theframe'b'eneath, at the point A.

The braces or supports F Fin 'some cases may' be 'dispensed tv ith, andthe vertical shaft can be made, stationary, and the frame andthe vpan be made to turn on the shaft, by forming the'hub longer, and making` the upper end solid, for vsupporting thepnn on the shaft. 1

The construction and disposition of the frame and braces or supports relative to a pan of this descriptipn are such, that much'etrength :is obtained with less amount of material, making the machine more easily trans.

portab'leto remote regions; also the frame and supports are'out of the way of the movements ofthe `pan and operator.

Below the hopper is alcirculanplate, I, towhich are nttachd `radial armsIlQand `from which depend rake-like teeth or 'pins a a a a, which act as agitators or stirrers, tol prevent the sand from packing near the centre of the pau, where the motion is diminishing. These teeth :are set at'an incline, to force the heavier particles towards the periphery ot' the pan. p A

An oil-groove, H', is made, either in the hubs of the pan or onthe shaft, for lubricatingl the'step. `Above the plate is a. feeding and discharginghopper,`J, from whence the pulp o r tailings passand dow .down the arm or pipe K, into an I-shaped distributer, K K', pierced atfthe bottom with holesb b b -andslots b b', for the pur. pose of cleaning and removing obstructions, and give notice of th stoppage-of the discharge through thepejrf forations to the operator by overflowing. These distributors' are made to` confoim-to the curveof the pan, and p one or more oi' them may be emplopd, stationary or movable, and, when so employed, the top of the rim ot'- the pan is notched into a saw-like edge, c c c, in which two pawls, d d, attached to'the end ofthe distributer, traverse,

and, by means of these; each oscillation sends the distribnterone notch foiward inits circuit, while 'its inertia t causes the motion to be continuous. The centre ofthe' hopper is a-slee've, and is stat-ionaror turns on thoshaft,

and. has an oil cavity, J, in the' end for lubricating the' sleeve and step.V

L'is a descending `channel or annular groove around thc innerperiphery ol the pan; gradually declining from a-certain point tp an opposite or discharging-point. At this pointls an' opening through-thc bottom of the pan, for discharging lthe amalgam and quicksilverthat 'may'be'jpresen also an opening above, which is proy vided with a 4small valve or gate,- M, which has a hole, e, tocan-respond with the opening through thcrim of tho y.

pan, which, by turning, brings it on a. line with the said opening.

The connecting-rodN is so disposed that it accommodates itself prticularlytovth'c circular line of direction in which the pan is caused to oscillate, and is provided with a'ball-craukpin, N', 4atene end, and a wrist-ball pin at the other. The wrist-pin iseecured tothe pan throughalug, andthe attachment made to the crankshaft a't the opposite end. l y

'The pau` 0 must be plaeeltuja,"level ,with the central discharge,- and, unless'it is so placed, it is out' of the4 question toexpect itito do its duty, and while in operation the pan must bekept about half. full of sulphurets, and as they Yacenimilnte over that amonnt,th'egate or valve M is'opened, whenv the discharging is commenced. The 'crank-shaft is intendedtomak-eAfrcmtwo hundred to twohundredand twenty revolutions per minute.

' The operation of 'the machina is such, thatgrains of `any kind, whatever-may`-be'their weight orgsiae', will .seek Lthe periphery .of thepa'n, and, un`less discharged,ivillthcre remain until other-grains of l greater speciiic gravity take their place. Conseqdentlpffra short spacecf time'ai'ter starting th'e'l machine, thepcriphery will be partially filled with sand', It isthereiore necessar'yto allow a quantity of 'sulphnretm sullioientto completelyA j ,"o'eoupythe space, tn alccnmulate .before the gate is opened, a'ndtheir` discharging commenced,- wbih'xnay bs continnous ornot, according .to the'rich'ness of ulphurets in the pulp or tailings'. '.llh'sconc'entrator can'bclset in- PFrs, for which asingle nkhaft will sudice.

.The following are the lmovements which t' ke' place in my machine; "lhe'gate being closcd .`the.pa`n iss'tartbd .i

by the belt-ennuaetig'nur other'nise, and thefeed of pulp or tailin'gs'commencea Particles bf all linds'rushto the peipheryof thepau. `r15halighter are gradually displaced by the heavier-particles.' of which lutter theY largerkeep at-the top.- 'This'is continued nutlila'cc'rtnin depth of the nc, heavy particleshus accumulated: The discharge-gate istheuepened to thepropentenuand a continuous dow of tliis-iiuc, lieaify matter is the result.' Als the larger particles of theheavier .matter accumulate, they-will, afteratime, o'utnumbcrtbo smaller, 4and 4will begin to iind their way out with'them, while the larger light particles willbegin to crowd each other cnt at.

the'centre with the-iinerzportion oi' the waste, making my machine' actin the eapacity'of-a sising-appuratus, as well as a'. copeentrator, withcut ths'appli-cation qfsieves or other devices- 'to accomplish the desired object, which at best are but slitw'and imperfect idtheir operations... M i i v Haring thulf'described my invention, 'what I claim, and desire to secui'eby, Letters Patent, isv 1.' The *annular groove I, declining: from a certain point to an opposite or discharging-point, in combination with a vibrating or oscillating-pan or concentratr, whose surface isconvex -or curvilinear, as described.l

2.A The discharge-valve o gate M, when constructed and arranged to operate .substantially as described..

n 3. The T-slraped distributors K K, pierced with holes 6' b'b, and having slots b', said di'stributers being either stationary or movable, and when movable the notched edge cle c, witli pawls, or their equivalents, .d d, operating therein" for driving thesaid distributers, substantially as and for the purpose described.

with-van osoillating-pan,'.as described.

A. The peculiar construction of the frameAl-L, it being triangularv in form, the projecting ends B B, for the crauk'shaft,.the pointA, in combination with au oscillating-pan, substantiallly as described;

6. Theoverreaching supports or braces F F, connecting* at the point F, and'in which the upper end of the 'vertical shaft turns, in combination with. the frame'A A, with tho'projecting ends B B, and oseillating-pan, s|ih.

stantially as described..

7j The peculiar constrmstion-,nt` the ball-crank pin Nl, when employed on @oscillating-pan, substauti'allyl- I as described.

8. 4'.lllleoil-,groove H, either in the hub of the pan or ou the vshat'tlir, and the oil-.cavityJQ above thehopperfor lubricating fthe sleeve'and step, with au oscillating-pau, substantially as described. v

Iuwitness whereof, .I have hereuntov set my hand and/scali. JOSHUA HENDY. [In 5.]

4Witnesses:

C. W. M. Sarra,

`J. L. Booms.

4. The agitators er stirrersd a a, attached tostationary or movable radial arms I I', or their equivalents. 

